4fcc461616
The same provider ID is stored under inconsistent column names across tables (deezer_id vs deezer_artist_id vs album_deezer_id vs similar_artist_deezer_id; spotify/itunes keep an entity qualifier, others don't; musicbrainz uses three nouns), so code checks 2-5 name variants everywhere. Add core/source_ids.py as the single source of truth for (provider, entity) -> column, with accessors that read an ID from a dict/sqlite3.Row robustly (canonical column first, then known aliases). NO database columns are renamed — these are the real names today; the registry just centralizes the knowledge. Targeted adoption (behavior-identical, verified): - core/artist_source_lookup.SOURCE_ID_FIELD now derives from the registry instead of duplicating the mapping (values unchanged). - web_server.py artist-detail builds artist_source_ids via source_id_map(...) instead of a hand-rolled per-source .get() dict. Broader call-site adoption deferred as clearly-scoped follow-up. Tests: tests/test_source_ids_registry.py (canonical columns, alias fallback, canonical-preferred, sqlite3.Row, source_id_map, SOURCE_ID_FIELD unchanged). Existing artist_source_lookup + artist_full_detail suites still green.
91 lines
3.1 KiB
Python
91 lines
3.1 KiB
Python
"""Source-artist → library lookup helpers.
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Extracted from `web_server.py` so the logic can be imported and unit-tested
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without booting the Flask app, Spotify client, Soulseek connection, etc.
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Two concepts live here:
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* ``SOURCE_ID_FIELD`` — the per-source column on the ``artists`` table that
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stores the external service ID (Spotify track ID, Deezer artist ID, …).
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This map is what ties a result clicked in the source-aware Search results
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back to a library record so we can serve the richer library view.
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* ``find_library_artist_for_source`` — given a source-aware click (e.g.
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``deezer:525046``), try to locate a matching library artist. First by
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direct column match against the source's ID column, then by case-
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insensitive name match scoped to the active media server.
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"""
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from __future__ import annotations
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import logging
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from typing import Optional
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from core.source_ids import id_column as _artist_id_column
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logger = logging.getLogger("artist_source_lookup")
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SOURCE_ONLY_ARTIST_SOURCES = frozenset({
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"spotify", "itunes", "deezer", "discogs", "hydrabase", "musicbrainz", "amazon",
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})
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# The per-source column on the ``artists`` table, derived from the canonical
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# source-ID registry (the single source of truth). Values are unchanged from the
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# previous hardcoded map — this just stops duplicating that knowledge here.
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SOURCE_ID_FIELD = {
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source: _artist_id_column(source, "artist")
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for source in (
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"spotify", "itunes", "deezer", "discogs", "hydrabase", "musicbrainz", "amazon",
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)
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}
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def find_library_artist_for_source(
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database,
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source: str,
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source_artist_id: str,
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artist_name: Optional[str] = None,
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active_server: Optional[str] = None,
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) -> Optional[str]:
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"""Return the library PK of an artist matching the source-aware click.
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Lookup order:
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1. Direct match on the source-specific ID column (server-agnostic — any
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library record with the right external ID is a hit).
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2. Case-insensitive name match within ``active_server`` (defaults to the
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active media server when not provided), so we don't jump the user
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across server contexts on a name collision.
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Returns ``None`` on miss or on any database error.
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"""
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column = SOURCE_ID_FIELD.get(source)
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if not column:
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return None
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try:
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with database._get_connection() as conn:
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cursor = conn.cursor()
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cursor.execute(
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f"SELECT id, name FROM artists WHERE {column} = ? LIMIT 1",
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(str(source_artist_id),),
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)
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row = cursor.fetchone()
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if row:
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return row[0]
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if artist_name and active_server:
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cursor.execute(
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"SELECT id FROM artists "
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"WHERE LOWER(name) = LOWER(?) AND server_source = ? LIMIT 1",
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(artist_name, active_server),
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)
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row = cursor.fetchone()
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if row:
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return row[0]
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except Exception as e:
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logger.debug(
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f"Library upgrade lookup failed for {source}:{source_artist_id}: {e}"
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)
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return None
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